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3. A car travels along a level curved road with a speed which is decreasing at a constant rate
of 0.6 m/s. The speed of the car as it passes point A is 16 m/s. Calculate the magnitude of
the total acceleration of the car as it passes point B which is 120 m along the road from A.
The radius of curvature of the road at B is 60 m.
Answer: aB 1.27 m/s²
Solution
A
120 m
B

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